Hello, Thank you for looking.
In this old post of a video on making window sash, he mentions the "trenching head" on his RAS. I spent the weekend trying to figure out an alternative name for it or where I could find something like this with no luck.
I found the videos of a man Named Jack English (I believe same guy in the video here) showing details of his, but have not actually found a Wadkin head.
https://sawmillcreek.org/showthread....or-window-sash
If anyone could point me in the right direction, it would be greatly appreciated. Brand name, Alt names for this type of tooling.
Thank you,
Jody